Answer:

Step-by-step explanation:
To find the area of an equilateral triangle, we can apply a formula.


The side length is given a.
Plug a in the formula as the side length.

Answer: 0.12
Step-by-step explanation:
Answer:
15
Step-by-step explanation:
15f-60=15×5-60=75-60=15
Answer:
2.2cm 530 3.2cm
Step-by-step explanation: